SHA512

string SHA512(string strToEncrypt){
        System.Text.UTF8Encoding ue = new System.Text.UTF8Encoding ();
        byte[] bytes = ue.GetBytes (strToEncrypt);

        //encrypt bytes
        System.Security.Cryptography.SHA512 sha512 = System.Security.Cryptography.SHA512.Create ();
        byte[] hashBytes = sha512.ComputeHash (bytes);

        //convert hashed bytes back to utf8 encoding
        string hashString = "";

        for (int i = 0; i < hashBytes.Length; i++) {
            hashString += System.Convert.ToString(hashBytes[i], 16).PadLeft(2, '0');
        }

        return hashString.PadLeft(32, '0');
    }